2660789490 has 16 divisors (see below), whose sum is σ = 6385894848. Its totient is φ = 709543856.

The previous prime is 2660789377. The next prime is 2660789497. The reversal of 2660789490 is 949870662.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2660789497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44346462 + ... + 44346521.

It is an arithmetic number, because the mean of its divisors is an integer number (399118428).

Almost surely, 2^2660789490 is an apocalyptic number.

2660789490 is an abundant number, since it is smaller than the sum of its proper divisors (3725105358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2660789490 is a wasteful number, since it uses less digits than its factorization.

2660789490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88692993.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 2660789490 is about 51582.8410423466. The cubic root of 2660789490 is about 1385.7030476848.

The spelling of 2660789490 in words is "two billion, six hundred sixty million, seven hundred eighty-nine thousand, four hundred ninety".